11500023513 has 8 divisors (see below), whose sum is σ = 16727306976. Its totient is φ = 6969711200.

The previous prime is 11500023499. The next prime is 11500023547. The reversal of 11500023513 is 31532000511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11500023513 - 2⁸ = 11500023257 is a prime.

It is a super-2 number, since 2×11500023513² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11500023513.

It is not an unprimeable number, because it can be changed into a prime (11500023013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174242748 + ... + 174242813.

It is an arithmetic number, because the mean of its divisors is an integer number (2090913372).

Almost surely, 2^11500023513 is an apocalyptic number.

It is an amenable number.

11500023513 is a deficient number, since it is larger than the sum of its proper divisors (5227283463).

11500023513 is a wasteful number, since it uses less digits than its factorization.

11500023513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348485575.

The product of its (nonzero) digits is 450, while the sum is 21.

The spelling of 11500023513 in words is "eleven billion, five hundred million, twenty-three thousand, five hundred thirteen".